urlpatterns = [
    ...
    path('', include(router.urls)),
    path('api-auth/', include('rest_framework.urls', namespace='rest_framework')),
    ...
]

带有 path（''，include（router.urls）），您可以获得：

http://127.0.0.1:8000/regulations/
http://127.0.0.1:8000/languages/

with

path('api-auth/', include('rest_framework.urls', namespace='rest_framework')),

您可以获得：

http://127.0.0.1:8000/api-auth/{other paths}